Kuma Stoves K-250 Cambridge LE Page 2 Installation And Operating Instructions Manual Download

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K-250

| 190808

This manual describes the installation and operation of the Kuma Model K-250 Catalytic equipped wood

heater. This heater meets the 2020 U.S. Environmental Protection Agency’s cord wood emission

limits for wood heaters sold after May 15, 2020. Under specific test conditions (ASTM 3053-2017) this

heater has been shown to deliver heat at rates ranging from 11,196 to 30,308 Btu/hr. and an efficiency

of 79.4% (High Heating Value). Please visit

https://www.kumastoves.com/content/page/EPA

for a

detailed explanation of stove efficiencies. Particulate emissions are 1.13 grams per hour and average

CO emissions are 0.1813 grams per minute.

Please read the safety precautions and the entire installation and operation

instructions carefully. Failure to properly install and maintain your wood stove

can result in an unsafe condition.

TABLE OF CONTENTS

SECTION 1 - SAFETY PRECAUTIONS

SECTION 2 - SPECIFCATIONS

SECTION 3 - INSTALLATION INSTRUCTIONS

SECTION 4 - OPERATING INSTRUCTIONS

SECTION 5 - CATALYST INFORMATION

SECTION 6 - MAINTENANCE

SECTION 7 - TROUBLESHOOTING

SECTION 8 - WARRANTY

Summary of Contents for K-250 Cambridge LE

Page 1: ...LE Cambridge LE Tested and listed by OMNI Test Laboratories Inc Portland OR USA Emissions tested to ASTM 3053 2017 Report 0123WM012E Safety tested to UL 1482 2011 R2015 Report 0123WS012S INSTALLATION AND OPERATING INSTRUCTIONS SAVE THESE INSTRUCTIONS ...

Page 2: ... Please visit https www kumastoves com content page EPA for a detailed explanation of stove efficiencies Particulate emissions are 1 13 grams per hour and average CO emissions are 0 1813 grams per minute Please read the safety precautions and the entire installation and operation instructions carefully Failure to properly install and maintain your wood stove can result in an unsafe condition TABLE...

Page 3: ...himney system carefully If you have any questions seek professional advice We recommend having existing chimneys cleaned and inspected by a qualified professional prior to the installation of your new stove NOTE ALL MINIMUM CLEARANCE REQUIREMENTS TO COMBUSTIBLES Installation must comply with minimum clearances as listed in this manual Clearances may only be reduced by means approved by the regulat...

Page 4: ...SECTION 2 SPECIFICATIONS CERTIFICATION TAG ...

Page 5: ...WOOD CLASSIC DIMENSIONAL DRAWINGS All dimensions are in inches ...

Page 6: ...ASHWOOD DIMENSIONAL DRAWINGS All dimensions are in inches ...

Page 7: ...CAMBRIDGE DIMENSIONAL DRAWINGS All dimensions are in inches ...

Page 8: ... equal to or greater than the minimum clearances Always follow local building codes These clearances may be reduced only by using approved methods found in NFPA 211 Alcove Dimensions must use double wall pipe Minimum 56 wide Minimum 84 tall Minimum Clearance with single wall pipe Minimum clearance with double wall pipe A 15 10 B 11 5 7 C 24 5 23 5 D 14 5 14 E 15 14 5 F 5 5 L 18 5 18 5 N 84 84 18 o...

Page 9: ...ifting techniques Standard Description UL 103 Covers the safety requirements for factory built metal chimneys that vent wood stoves Chimney manufacturers can either comply with a 1700 or a 2100 flue gas temperature test UL 103HT Chimney manufacturers that choose to comply with the 2100 flue gas temperature test will receive the designation of a 103HT chimney system HT stands for High Temperature a...

Page 10: ...uired Through Wall Installations Hearth must extend underneath and 2 to either side of the horizontal connector pipe STOVE ASSEMBLY Uncrate the stove Each piece of the stove will be included in a separate box Follow the instructions located in each box to install the components of the stove Assemble the stove in the following order 1 Lay the stove on to its back 2 Install the Ash Pan Kit optional ...

Page 11: ...offsets in the chimney 15 ft 90 offsets in the chimney 16 ft 90 offsets with 2 3 feet of horizontal run 20 ft 90 offsets into exterior chimney 22 ft WHEN CONNECTING TO AN ALL FUEL CHIMNEY SYSTEM An all fuel chimney system consists of prefabricated metal chimney parts that have been designed and tested for use with modern wood stoves Examples of 103 HT systems include DuraTech manufactured by DuraV...

Page 12: ...of to prevent damage from sliding snow and ice Scan to see the Kuma snow diverter engineered for metal roofs ADDITIONAL REQUIREMENTS FOR MANUFACTURED MOBILE HOMES An outside air kit KA OA 1 is required for all mobile home installations Follow the instructions located in the box Double wall connector pipe is required for all mobile homes Using 8 gauge ground wire and appropriate connectors you must...

Page 13: ...Typical installation of an all fuel chimney system ...

Page 14: ...mends that an insulated chimney liner always be installed into a masonry chimney for improved performance and ease of cleaning Chimney liners should not be smaller than 6 diameter or the equivalent cross sectional area of 28 square inches Any reduction in flue size may result in smoking or poor performance 3 Equally important to the construction of the chimney is the connection between the stove a...

Page 15: ...rning Appliances Copyright 2015 National Fire Protection Association Quincy MA This reprinted material is not the complete and official position of the NFPA on the referenced subject which is represented only by the standard in its entirety which may be obtained through the NFPA website at www nfpa org ...

Page 16: ...re meter to determine the moisture content of the wood The recommended wood length for this heater is 18 This heater is designed to burn natural wood only Higher efficiencies and lower emissions generally result when burning air dried seasoned hardwoods as compared to softwoods or to green or freshly cut hardwoods DO NOT BURN a Garbage b Lawn clippings or yard waste c Materials containing rubber i...

Page 17: ...ause the appliance to leak smoke and carbon monoxide into the room through appliance and chimney connector joints Factors that reduce draft are Too much draft may cause excessive temperatures in the appliance and may damage the internal components of the stove An uncontrollable burn or excessive temperature indicates excessive draft Factors that increase draft are Obstructions or geographical feat...

Page 18: ...ormal operating position for the stove Your stove should always be in this position unless you are starting or reloading the stove Lift the bypass lever and push in to return the bypass to the run position 2 Start Reload Position This position helps to quickly heat the chimney and the catalyst during start up by allowing some heat to bypass the catalyst This position also allows you to reload the ...

Page 19: ...t you may be exceeding the recommended operating temperature of the catalyst 1300 F It is fine to go above the recommended operating range for short periods of time The maximum operating temperature is well beyond the caution symbol 1600 F c Use the Primary Air Control to change the temperature of the stove d As your stove cools there is an indicator on the dial reminding you to reload your stove ...

Page 20: ...ol to the Run Position engaging the combustor 4 Leave the air control open for 10 20 minutes so that the fire becomes well established then begin to adjust your rate of burn ADDITIONAL TIPS FOR BURNING EFFICIENTLY Burning wood produces both visible emissions e g particulate matter or smoke as well as invisible emissions e g Carbon Monoxide When operating your stove periodically check for visible e...

Page 21: ... Troubleshooting section of this owner s manual 2 This hybrid heater is equipped with a temperature probe to monitor catalyst operation Properly functioning combustors typically maintain temperatures in excess of 500 F and often reach temperatures in excess of 1 000 F If catalyst temperatures are not in excess of 500 F refer to the Catalyst Troubleshooting section of this owner s manual 3 You can ...

Page 22: ...ight fitting lid and keep away from the house NEVER EMPTY ASHES INTO A COMBUSTIBLE CONTAINER SUCH AS A PLASTIC BUCKET OR PAPER BAG NEVER LEAVE ASHES NEAR THE HOUSE OR GARAGE CHIMNEY INSPECTION AND CLEANING When wood is burned slowly it produces tar and other organic vapors which combine with expelled moisture to form creosote The creosote vapors condense in the relatively cool chimney flue of a sl...

Page 23: ...the stove If your burn tubes are not physically degraded falling apart crushed or excessively warped then they are functioning and will not need replacement To remove a burn tube un bolt the tube using a 7 16 wrench Pull the tube to the right then down and out of the stove Replace the tube and re install the bolt the holds the tube in place CATALYST INSPECTION CLEANING AND REPLACEMENT The catalyst...

Page 24: ...ffle and is designed to keep heat in the stove and increase efficiency If the insulation is in place it can be left alone If the insulation becomes torn during cleaning simply lay it back together tightly in that area If the insulation tears to multiple pieces it should be replaced To replace the ceramic insulation remove the 3 burn tubes allowing the entire baffle to come down and out of the stov...

Page 25: ...MAINTENANCE DIAGRAMS PARTS LIST ...

Page 26: ...ts All models 8 KR CT 01 Catalytic combustor metal alloy Includes Gasket KR GK 01 Fits All models 9 KR BT 251 Baffle burn tube front Fits ASH WCL CAM CAS 10 KR BT 252 Baffle burn tube middle front or middle rear Fits ASH WCL CAM CAS 11 KR BT 253 Baffle burn tube rear Fits ASH WCL CAM CAS 12 KR SP 02G Door handle gold Fits All KA DR 25 and KA DR 18 doors 12 KR SP 02P Door handle pewter Fits All KA ...

Page 27: ...ney reduces the effective area of the chimney by about 20 Pay close attention to the chimney cap especially if it has a screen Screened chimney caps can become blocked enough to restrict flow in just a few weeks STOVE SMOKES OUT THE DOOR WHEN IT IS OPEN 1 The door was opened before the bypass rod was pulled open Open the bypass for 1 minute before opening the door 2 The door was opened too quickly...

Page 28: ...ling to build up the heat only put large chunks of wood on a very hot and active bed of coals If there are large chunks of charred wood left after the fire has gone out the coal bed was not hot enough 2 Fuel quality Harder denser woods produce longer burn times Likewise softer woods produce shorter burn times 3 Check the main door gasket and glass gasket for proper seal See for instructions on che...

Page 29: ...ize repair of any defective part at its sole discretion This warranty is not transferrable and covers the original owner of the product from the time of purchase All parts that have been replaced under this warranty will have a 90 day warranty coverage The maximum value of this warranty is the original purchase price of the product This warranty is subject to the conditions and limitations outline...

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Kuma Stoves K-250 Cambridge LE, Installation And Operating Instructions Manual

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